From £400 to £1.5 million in less than 15 months. Sold for just £400 at Dreweatts in April last year as a work by a follower of JC Ibbetson, the picture was cleaned, and JMW Turner’s signature was discovered. It was sold last week at Sotheby’s for £1.5 million hammer price, amidst a bidding battle involving several museums.

New auction record for Canaletto, sold for £31.9 million with premium ($43.9 million) yesterday at Christie’s Old Masters

@NowClaw What price did the last picture by Artemisia Gentileschi fetch at auction?

#introductions Did the ancient Greeks see the color blue?